Burner head for oil-burner plants



Dec. 4, 1928. I 1,694,012

C. W. JOHNSON .BURNER HEAD FOR OIL BURNER PLANTS Filed Dec. 15, 1927 Patented Dec. 4, 1928.

uulreasfr-Arees CHARLES zronrrsoiv,v or SEATTLE, wasnnve'ron,

BURNER HEAD ronoIri-BURNER rnarrrs,

Application filedJJecember 15, 1927. Serial No. 240,254

This invention relates to oil burner plants, and particularly to-the burnerheads thereof The general obj eot of the present. invention is toprovidea burner head which isadapted to be mounted within the fire door opening of the furnace or in any other suitable location, and which is so constructed that the ignited spray or jet of burning oil may be discharged against; any desired portion of the furnace. I

A further object is to provide a device of this character which may be readily applied to ordinary furnaces, and further to provide a construction of this character which is particularly adapted to be used in connection with the oil and air valve shown in my copending application, Serial #240,255 filed of even date herewith.

My invention is illustrated in the accompanying drawing, wherein Figure 1 is a schematic elevation of a fur-' nace with my improved burner head applied thereto;

Figure 2 is an enlarged sectional view of the burner head;

Figure 3 is a similar view of a. modified form;

In this drawing, A designates a furnace having the fire door opening B and the ash pit opening B. Mounted within the fire door opening is the plate 10. This front plate 10 is adapted to be held in place by any suitable means and has an opening 11. Disposed within this opening is a hemispherical shield 12 which'is pivoted upon transversely extending trunnions 13 on the plate 10 so that the shield 12 may be oscillated in a plane at right angles to the axes of the trunnions 13. The plate 10 is formed with a thickened portion 14 through which a set screw '15 may pass to engage the shield and hold it in any adjusted osition.

Extending through the rear end of the shield is the burner, designated generally 16. This burner is provided with the nozzle 17 preferably having spiral rifles upon its interior so as to cause the mixed air and gas coming from the body of the burner 16 to be discharged in the form of a whirling spray. Within the bod 16 or casing there is disposed an air an oil valve such as illustrated in my before-mentioned application, this being of such character that when the air is turned on or projected, the oil will be caused to automatically flow, and when the pressure of air is reduced or stopped, the oil will cease its flow. I do not wish to be limited to this nor to the particular form of the atomizing nozzle 17, as these in detail form no part of extending my present invention. Also throughthe shield are the spark plugs 18 of any suitable character whereby the jet of oil projected from the atomizingburner maybe lighted. f I

WVhile this burner may be used in connection with any desired oil burner plant, I have illustrated the burner 16 as being connected by the air pipe C to an air compressor D and the oil pipe E as being connected to an overhead tank F into which oil is pumped by a pump G,

the air compressor and the pump being operated by the motor H which is preferably an electric motor. Oil is pumped from an oil tank I. In this construction, the motor is started by closing the switch. As soon as the motor starts, the compressed air flows through the pipe C and, by means of the mechanism illustrated in my other application, opens the oil valve so that mixed air and oil commences to flow through the burner noz- 1 zles 17, which is then ignited by means of the spark plug electrodes heretofore referred to. Valves are provided in the oil and air line for the purpose of controlling the relative flow of the oil and air.

The general purpose of the present invention is to provide, as before stated, means whereby the projected stream of mixed air and oil may be directed to any point of the furnace where desired, as neither the ash door nor the fuel door of the furnace now on the market are ordinarily in the proper location for eflicient heating. By providing an adj ustable head such as I have described, this disadvantage is overcome. Furthermore, the shape of the'shield and its relation to the burner head, to a large extent, eliminates carbon and prevents the atomized nozzle from becoming overheated. l/Vhile I have illustrated a construction in which the shield is pivoted to the plate, it will be obvious that the margin of the shield 12 may be provided with a socket 19 engaging an inwardly curved flange on the plate 10 so that the shield may have a universal movement and direct the flame in any desired direction.

'I do not wish to be limited to the details illustrated, nor to the shape of the burner head, as these might be changed without departing from the spirit of the invention as defined in the appended claims.

I claim 1. In an oil burning furnace, a hemispherical shield swingingly mounted in the furnace wall, the margin of the shield projecting inward to the inside face of the furnace wall, an oil burner extending through the shield at the center thereof and swinging therewith, whereby the shield with the burner may be swung into a plurality of different angular positions with relation to the inside wall of the furnace. i

2. In an oil burning furnace, a hemispherical shield swingingly mounted upon the wall of the furnace, the wall having an opening within which the shield fits, the shield extending beyond the inner face of the wall, whereby the shield may be swung into a plurality of different angular positions with reference to the inner wall, a burner carried by the shield at the center thereof and bein shiftable with the shield, and means mounted upon the shield and adjacent the burner whereby the fluid projected by the burner may be ignited.

3. In an oil burning furnace, a plate adaptedto be mounted across an opening in the furnace wall, said plate having a central opening, a shield hemispherical in cross section swingingly mounted in said plate and extending inward beyond the inner face of the plate, a burner carried by the shield at the center thereof and discharging inward through the opening in the plate, and means whereby the fluid projected by the burner may be ignited.

In testimony whereof I hereunto afiix my signature.

CHARLES W. J OHNSON- a 

